Stuffing-box and bearing for shafts of marine propellers.



H. D. BACON. STUFPING BOX AND BEARING POE SHAPTS 0F MARINE PROPELLERS.

APPLICATION FILED SEPT.12. 1912.

Patented Oct. 7, 1913.

Mil/[#70 7 flaw/0 55 cm;

firm/mas HENRY DoUGLAs BACON, on BATH, MAINE.

STUFFING-BOX AND IBEARINGIOR SHAFTS 013 MARINE PEOPELLERS.

Specification of Letters Patent.

Patented 0a. 7,1913.

Application filed September 12, 19-12. Serial No. 719,948.

To all whom it may concern:

Be it known that I, HENRY DoUGLAs BA- CON, a citizen of the United States, and a resident of Bath, in thecounty of Sagadahoc and State of Maine, have invented an Improved Stufling-Box and Bearing for Shafts of Marine Propellers, of which the following is a specification.

The chief object of my invention is to provide a shaft stufling-box and bearing that offers minimum friction to the water as the boat or other craft is propelled through it, and will readily adapt itself to any angular shifting or displacement of the shaft relative to the keel. The result is attained by the construction, arrangement, and combination of parts hereinafter described, and illustrated in the accompanying drawings.

Figure l is a vertical longitudinal sect-ion of my invention applied to a boat hull. Fig. 2 is a plan view of the same. Fig. 3 is a longitudinal section showing a modification of the housing adapted to be secured to a hull. Fig. 4 is an inner face view of the housing, a propeller shaft being shown in section. Fig. 5 includes a face and edge view of a locking washer.

A indicates what is often termed a shaft log, the same consisting of a metal casing or housing through which a propeller shaft B extends, and whose chamber is of suitieient diameter and capacity to permit any possible angular shifting or displacement of the shaft. The said housing has a lateral flange a extending around it and at such inclination as ada ts it to fit against the sternof a boat hul to which it is attached by screws, as shown in Fig. 2.

The stuffing-box and shaft bearing are formed by said housing and three other coacting parts indicated by letters C, D, and E. The part C is in the form of a threaded sleeve that receives the shaft B and is provided with a hemispherical head that is located within the conical end of the housing A and is formed concentrically therewith. The opening in the conical end of the housing A is of such greater diameter than this part C as to permit any lateral shifting or displacement of the shaft and the sleeve bearing. The second member D is a lock nut which is screwed on the body of the sleeve bearing C and whose inner side or face is formed concentrically with the conical end of the housing against which it is fitted loosely and with which it works in cal end of the housing is arranged between and concentrically with the hemispherical head of. the sleeve bearing 0 and the inner face of the locking nut D. The third. memmay be interposed as shown. Soft. packing G is arranged within the fair-water nut frictional contact. In other words, the coni- E adjacent to the end of the sleeve bearing C and the same is suitably compressed when the parts are screwed tightly together.

In Figs. 3 and 4, the housing A is con- I structed with radial flanges in place of inclined ones, as shown in Figs. 1 and 2, by

which construction the housing is adapted for application to boat hulls having square or flat sterns.

The shaft housing and the parts C and D with which itworks in frictional contact having all the form of a half circle with a I common radius, it is evident that the shaft B can turn about the center of this circle to any point within the limit of the opening within the housing, it being only necessary for this purpose to slack the locking nut slightly I By this construction and combination of parts, I produce a stuffing-box and bearing which offers minimum resistance to water, effectually prevents leakage. has little friction, allows any required shifting or displacement of the shaft, and is strong, dura ble, and may be constructed and applied at small cost. It is to be understood also that various changes may be made in the details of con struction without affecting the scope of my invention.

What I claim is 1. The improved stuffing-box and bearing housing which vincloses the same, and a lockmg nut screwed on the outer end of the sleeve and having its mner face formed con- .on lines concentric with the outer end of the I centrically with the adjacent conical end of inner face formed concentrically with the the housing which is interposed between the adjacent end of the housing and the sphericonical head of the sleeve and the nut, as cal head of the sleeve bearing, and a fairdescribed. water nut also screwed on the sleeve bear- 2. The combination with a chambered ing and tapered toward its outer end on housing adapted to be attached to a boat lines coinciding with the outer side of the hull and having a conical outer end, a sleeve locking nut, as described.

bearing having a hemispherical head formed 1 HENRY DOUGLAS BACON.

on lines concentric with the inner and outer i Witnesses:

sides of the end of the housing, a locking ARTHUR J. DUN'roN,

nut screwed 0n the sleeve and having its EVA J. CARLTON. 

